William r



[UNIT- D STATES WILLIAM it, innings, n, or

e rant 'rrien,

; owena-1A MER.

. ,SPEC I FICATI IION forming part o'l'Letters Patent No. 358,672,'da tec1 March 1, 1857.

, Application filed February 23, 1886. Serial X0. M11921. mailman.) I

Tohllwhom it may concern:

Beit known that I, WILLIAM-R. JENKINS Jr.', a citizen of the-United States, residiugat Bellefonte,*in the' countyof Gent-reand State 5 of-Pennsylvania, have invented c'ertaiune-w and useful Improvements in Power-Hammers;

and 1- do hereby declare the following to be a 'full, clear, and exact description of the inventio'n,-'such as will enable others skilled inthe art to which itappertains to make and use the same. My' invention relates particularly to that class of power-hammers wherein the hammer operates through'an oscillating helve having proper bearings between the hammer and the mechanism for driving the same, and more especially is it designed as an improvement; "uponmy formerpatent, No. 237,872, of Februarylo, 1881; and it consists in an improved,

errand arrangement of the elastic e'ushions at the fulcrum of the helve, and in elastic-cushions placed above and below the connectionvof the helve with the ram which carries the hammer, whereby-the blow of the hammer is rendered more elastic and yielding and the helve relieved from any excessive Y shock,all as will be more full y hereinafter explained and understood.

For a more thorough understanding. of the tention is invited tothe accompanying drawings, in which Figure 1 1s a side elevation of my improved power-hammer; Fig. 2, a longitudinal section vof the helve the cushions, and the ram; and Fig. 3, atransversesection of the helve and it's fulcrum. J j .Likeletters denote corresponding parts in ftheseveral views. T

1 The frame is made in twoparts, A representing the lower part or base,which su the anvil an'd driving mechanism, and A the upper part, having vertical extensions B B, the said parts A A, comprising the frame, being bolted together, as shown, andfurnishing a strong and substantial support for all the necessary parts. The extension B has the usual vertical guide, a, for the ram D to slide in asto be'adjustable and removable to provide for the wearing-of theseparts; i'lhe extendetails of construction and arrangement at stresspulley' and said guide is secured by screws a, so

- siouBof the upper part consists'of two upabove and below against elastic cushions E E,

pockets 0 c of the upper and lower cross beams 12 b. Tlhese elastic cushions may be made of anysuitable material and of any shape, but are preferably madaof rubber and elliptical in shape, so as to more readily accede to the movement of the helve. The forward end of the helve 0 passes into a recess, cl, made ,in "the upper end of the mm D, which carries the round and of rubber, are placed above and recesses d at, similar toethose at the fulcrum of the helve. I 4

To the rear end of the helve is attached the lever G, which has connection with a crankshaft, H, provided witha driving-pulley, H, and mounted in suitable bearings upon the and near the driving pulley, is pivoted a socket or sleeve, I, through which passes an adj ust-able arm, I, carrying on its upper end a stress-pulley, J, which has action upon the beltpassing aroundthe driving-pulley; This is for the purpose of regulating the force of the'blow,- and is operated by 'a treadle, means of a rod, 6, and arm f, the latter being properly Thistreadle is pivoted to the hase,-as shown,- and is supported by a leaf-spring, K, which 'forces it back to its normal position when the foot is removed. 'Byusing elastic cushions at the connection of the helve with the rain, the .blow is rendered more elastic and yielding,and

By the present arrangement of the elastic which are seated in the recesses orpockets c c lOf saidblock and in corresponding recesses 01;

below this end of the helve, and are each held in place both-above and below by pockets or base A of the frame; also, upon this base A,

the helve is relieved from any excessive shock;

hammer D, and elastic cushions F F, preferably K, with which it is connected by connect-ed to the socket or sleeve 1. V

l'ati'ng helve with one end passing into and I cushions above and below the fulcrumfof the helve more efi'ective and-rendering the cost of the ham merjm'uchless thanformerly.

. Having thus described my invention, what ent, isy V 1. A power-hammer with. an oscillating helve"pivotallyconnected at one end to the crankshaft directly and elastically connected at theother end to the fam, and having an int-ermediate elastic fulcrum, substantially as described.

2. Ina power-hammer, the combination of a ram'moving in vertical guides and an oscilconnected to the ram between two elastic cushions, with the other endpivotally'connected to' the crank-shaft, and with an-intermediatewelastic fulcrum,- substantially as described.

3. A power-hammer having an oscillating desire tosecure by Letters. Patsafmz I helvepivotaliyconnected at one end to crank-shaft and provided with elastic cushbelow itsfleon nection with the ram, substan 'tially asdescribed I y 4. A power-hammer having-an oscillating helve provided withn; beating-block at its fulcrum and elliptic elastic cnshions in the recesses, insaidblock and in similar recesses in the 1 frame, substantially as described.

placed above and below the fulcrumandset;

5.- A powenha mner-firovided with an oscillati-ng helve co'nneeted. dir'eetI-y"to' the-Eragm' l i and having elasticbali-cnshions filaeed above and below .suchconnection, and held by recesses or pockets in-the'helveand in substantially as described. In testimony whereof I afiix my signature in presence of two-witnesses. y v WILLIA R.- gnnm-Ns; ;IJR; witnesseszfl i GEO. H. COOPE J b-,

Gr lls. P. BA L Y.

ihe ram, 

